Java specifies arrays similar to that of a "row major" configuration, meaning that it indexes rows first. This is because a 2D array is an "array of arrays".
For example:
int[ ][ ] a = new int[2][4]; // Two rows and four columns.
a[0][0] a[0][1] a[0][2] a[0][3]
a[1][0] a[1][1] a[1][2] a[1][3]
It can also be visualized more like this:
a[0] -> [0] [1] [2] [3]
a[1] -> [0] [1] [2] [3]
The second illustration shows the "array of arrays" aspect. The first array contains {a[0] and a[1]}, and each of those is an array containing four elements, {[0][1][2][3]}.
TL;DR summary:
Array[number of arrays][how many elements in each of those arrays]
For more explanations, see also Arrays - 2-dimensional.
Answer from MrHappyAsthma on Stack OverflowJava specifies arrays similar to that of a "row major" configuration, meaning that it indexes rows first. This is because a 2D array is an "array of arrays".
For example:
int[ ][ ] a = new int[2][4]; // Two rows and four columns.
a[0][0] a[0][1] a[0][2] a[0][3]
a[1][0] a[1][1] a[1][2] a[1][3]
It can also be visualized more like this:
a[0] -> [0] [1] [2] [3]
a[1] -> [0] [1] [2] [3]
The second illustration shows the "array of arrays" aspect. The first array contains {a[0] and a[1]}, and each of those is an array containing four elements, {[0][1][2][3]}.
TL;DR summary:
Array[number of arrays][how many elements in each of those arrays]
For more explanations, see also Arrays - 2-dimensional.
Answer from MrHappyAsthma on Stack Overflow Top answer 1 of 9
111
Java specifies arrays similar to that of a "row major" configuration, meaning that it indexes rows first. This is because a 2D array is an "array of arrays".
For example:
int[ ][ ] a = new int[2][4]; // Two rows and four columns.
a[0][0] a[0][1] a[0][2] a[0][3]
a[1][0] a[1][1] a[1][2] a[1][3]
It can also be visualized more like this:
a[0] -> [0] [1] [2] [3]
a[1] -> [0] [1] [2] [3]
The second illustration shows the "array of arrays" aspect. The first array contains {a[0] and a[1]}, and each of those is an array containing four elements, {[0][1][2][3]}.
TL;DR summary:
Array[number of arrays][how many elements in each of those arrays]
For more explanations, see also Arrays - 2-dimensional.
2 of 9
20
While Matt B's may be true in one sense, it may help to think of Java multidimensional array without thinking about geometeric matrices at all. Java multi-dim arrays are simply arrays of arrays, and each element of the first-"dimension" can be of different size from the other elements, or in fact can actually store a null "sub"-array. See comments under this question
Wikipedia
en.wikipedia.org › wiki › Row-_and_column-major_order
Row- and column-major order - Wikipedia
April 21, 2026 - The difference between the orders ... of an array are contiguous in memory. In row-major order, the consecutive elements of a row reside next to each other, whereas the same holds true for consecutive elements of a column in column-major order. While the terms allude to the rows and columns of ...
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❤️➕➖ Arrays: Rows and Columns ✖️➗❤️ - YouTube
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Row-major order vs column-major order: Samuel's tutorial - YouTube
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Arrays: Columns and Rows - YouTube
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Describe Arrays with Rows and Columns - YouTube
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Arrays- Rows and Columns - YouTube
NV5 Geospatial Software
nv5geospatialsoftware.com › docs › Columns__Rows__and_Array.html
Columns, Rows, and Array Majority
View our Documentation Center document now and explore other helpful examples for using IDL, ENVI and other products.
MathWorks
mathworks.com › matlab coder › matlab programming for code generation › data definition › array layout
Row-Major and Column-Major Array Layouts - MATLAB & Simulink
The elements of an array can be stored in column-major layout or row-major layout. For an array stored in column-major layout, the elements of the columns are contiguous in memory. In row-major layout, the elements of the rows are contiguous. Array layout is also called order, format, and ...
Medium
medium.com › @linuxrootroom › python-row-and-column-major-multidimensional-array-8ce9f0cf78dd
Python: Row and Column Major Multidimensional Array | by Linux Root Room | Medium
July 26, 2024 - Python’s NumPy library is widely used for numerical computations and supports both row-major and column-major order through the order parameter in array creation and manipulation functions.
Runestone Academy
runestone.academy › ns › books › published › csawesome › Unit8-2DArray › topic-8-1-2D-arrays-Day1.html
8.1.1. 2D Arrays (Day 1) — CSAwesome v1
Arrays in Java can store many items of the same type. You can even store items in two-dimensional (2D) arrays which are arrays that have both rows and columns. A row has horizontal elements. A column has vertical elements.
YouTube
youtube.com › watch
Arrays: Columns and Rows - YouTube
Learn about the vocabulary to launch concepts behind multiplication and creating equal groups.
Published: April 15, 2020
Carnegie Mellon University
cs.cmu.edu › ~mrmiller › 15-110 › Handouts › arrays2D.pdf pdf
Two-Dimensional Arrays 15-110 Summer 2010 Margaret Reid-Miller
• Each column is a different movie · 2 · Summer 2010 · 15-110 (Reid-Miller) Two-Dimensional Arrays · • Two-dimensional (2D) arrays are indexed by two · subscripts, one for the row and one for the column. • Example: row col · rating[0][2] = 2! !rating[1][3] = 8!
Tibco
docs.tibco.com › pub › fsp-instream › 9.2.0 › doc › html › Business-Rules › Array_Rows_and_Columns.htm
Array Rows and Columns
Array business rules refer to cells in arrays by column and row. Example: cell 0,1 means column 0 and row 1.
Frontenddad
frontenddad.com › posts › columns-and-rows
Thinking of Multidimensional Arrays as Rows and Columns | Front End Dad Blog
March 21, 2024 - But we will be expanding on the pattern a bit to add the concept of constraints - the beginning and the end rows and columns for a given operation. This will allow us to use the constraints to narrow down the path or bounds of the loops we can expect to write. We can think of a strategy in which we use these constraints to guide the program through the spiral. I will start coding a solution and updating the drawing to make more sense of this. function matrix(n) { // create our final structure... an array containing n subarrays const final = [] for (let i = 0; i <= n; i++) { final.push([]) } // the challenge has us counting from 1 let counter = 1; // create our bounds or constraints let startRow = 0; let endRow = n - 1; let startColumn = 0; let endColumn = n - 1; // do something }
Esa
pla.esac.esa.int › ftp_public › plaavi › external_deps › temp › usr › local › harris › idl › help › online_help › Subsystems › idl › Content › Creating IDL Programs › Components of the IDL Language › Columns__Rows__and_Array.htm
Columns, Rows, and Array Majority
Multidimensional arrays are therefore ... in one-dimensional linear memory. These two options, which are explained below, are commonly called row major and column major....
Runestone Academy
runestone.academy › ns › books › published › apcsareview › Array2dBasics › a2dLoop.html
10.6. Getting the Number of Rows and Columns — AP CSA Java Review - Obsolete
Arrays know their length (how many elements they can store). It is a public read-only field so you can use dot-notation to access the field (arrayName.length). The length of the outer array is the number of rows and the length of one of the inner arrays is the number of columns.
University of Washington
courses.cs.washington.edu › courses › cse121 › 25wi › resources › cheatsheets › cheatsheet-11
2D Arrays - CSE 121
We will start from the top of the matrix and traverse downwards to find the desired row, row 2. ... Once we have found row 2, we will traverse the columns from left to right to find column 1. ... Remember that 2D arrays also have zero based indexing, so we start counting from the zero row and zero column.
GeeksforGeeks
geeksforgeeks.org › dsa › introduction-to-matrix-or-grid-data-structure-and-algorithms-tutorial
Matrix or Grid or 2D Array - Complete Tutorial - GeeksforGeeks
September 10, 2026 - Like one-dimensional arrays, matrices can be accessed randomly by using their indices to access the individual elements. A cell has two indices, one for its row number, and the other for its column number.
Cplusplus
cplusplus.com › forum › beginner › 188240
Arrays rows/columns - C++ Forum
However, a row is horizontal and a column is vertical.
Sdds
intro2c.sdds.ca › two-dimensional arrays
Two-Dimensional Arrays | Introduction to C - Table of contents
The C language stores the elements of a two-dimensional array in row-major order: the first row, column-element by column-element, then the second row, column-element by column-element, then the third row, etc..
Math.net
math.net › home › primary math › other › array
Array
An array is an arrangement of objects, such as numbers, typically in rows and/or columns.
CK-12 Foundation
ck12.org › all subjects › cbse math › matrices to represent data › what are rows and columns in matrices?
What are rows and columns in matrices? - Definition & Definition | CK-12 Foundation
September 11, 2025 - For instance, in a matrix of order ... & a_{23} & a_{24} \\ a_{31} & a_{32} & a_{33} & a_{34} \end{pmatrix}\end{align*}@$$ Columns: The vertical arrays are known as columns in a matrix....
GeeksforGeeks
geeksforgeeks.org › c language › multidimensional-arrays-in-c
Multidimensional Arrays in C - 2D and 3D Arrays - GeeksforGeeks
August 31, 2026 - A 2D array stores elements in rows and columns and is commonly used for matrices and tables.
DEV Community
dev.to › drvcodenta › accessing-rows-and-columns-in-a-2d-array-and-insert-methodpython-2plo
accessing rows and columns in a 2d array and insert method(python) - DEV Community
March 17, 2024 - Accessing an element: To access an element in a 2D array, you use two indices. The first index is for the row and the second index is for the column.